CN105359577A - Communications links assessment - Google Patents
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- CN105359577A CN105359577A CN201480038928.7A CN201480038928A CN105359577A CN 105359577 A CN105359577 A CN 105359577A CN 201480038928 A CN201480038928 A CN 201480038928A CN 105359577 A CN105359577 A CN 105359577A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/127—Avoiding congestion; Recovering from congestion by using congestion prediction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
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- H04W28/18—Negotiating wireless communication parameters
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- Computer Networks & Wireless Communication (AREA)
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Abstract
There is provided a method, a communications device, a vehicle and a computer program for adaptation of operation for communication between communications devices. An application is executed by a first communications device. The application involves data communications with a second communications device. A predicted impact on at least one communications link used for the data communications is acquired. The predicted impact is based on information of current link parameters of the at least one communications link. Operation of the first communications device is adapted based on the predicted impact.
Description
Technical field
Embodiment in this paper relates to the communication between communicator, and particularly adapts to the method for the operation of the communication be used between communicator, communicator and computer program.
Background technology
Generally speaking, communication system provides necessary mode to come and other communication in communication system to a communicator.The example of such communicator is subscriber equipment (UE) and network node.The example of UE is mobile phone, laptop devices, flat computer or stationary computers, input/output device, automation controller, electronic controller unit, actuator, transducer and machine to machine device, is also referred to as the device of connection.The example of network node is base station transceiver, WAP (wireless access point), gateway and server.
Communication exchanges messages based on the communication link set up between the communication devices.These communication links can be its combinations wired, wireless or any.Communication can be direct communication can be maybe route by one or more intermediate communication device.Message meets one or more given communication protocol.In such a communications system, be usually difficult to obtain for given communication protocol, its parameter and the wherein superperformance of the physical environment of deployable communication system and capacity.
Generally speaking, communication system multiple services that the communication between other communicator can be provided relevant.Generally speaking, the service provided is relevant with the dissimilar exchange of the information between communicator.The specific requirement of the information exchange between each service can have communicator.Ask for something is the parameter relevant with reliability, bit rate, stand-by period etc.Each service also can be responsive to the change of the such parameter utilizing application ongoing of service the term of execution.
Actor/data flow modeling is the example of stream transmission application (such as, the application of the subscriber equipment (UE) for Distributed Calculation and parallel tables generally speaking).The programming model of this constraint is of value to senior conversion and promotes that code optimization and running time are disposed.Programming model allows an application examples as being distributed on some different communicators by disposing one or several actor or application module on different available software servers in the application.Software server can realize in server, base station transceiver, microdata center (MDC), and they can comprise the set of the server associated with base station transceiver or UE.
In data flow example, program or application are described as the chart of actor or application module (being also referred to as functional unit), above-mentioned functions unit uses message current (so-called token) to communicate asynchronously.Actor can have the internal state information of current internal state of instruction application, and that is other control data of the current code fragment performed and the value be stored in any processor register associated and various parameter or variable possibly.Programming model is applicable to many traditional Digital Signal Processing application (such as, Voice & Video coding, radio baseband algorithm, cipher application, automation etc.) naturally.Program specification is separated from the available horizontal performed hardware is parallel by data flow, because task may not be complete in application code but complete in compiling and deployment phase to the actual mapping of thread, process, core and device.Therefore, the designer of application does not need to know the practical structures performing hardware system.This is of value to application that design will use in the infrastructure (such as, different models) of change and is conducive to the communication pattern of communication terminal, different network infrastructures and change.
Application is divided into application module and is distributed to the various network nodes performing their application module according to actor's data flow model.Other example of computation model is server client model, Model View Controller (MVC) model, peer-to-peer model etc.The communicator performing application can use according to the method above for distribution applications on some communicators.
But, still need the communication of the improvement between communicator.
Summary of the invention
An object of embodiment is to provide the communication of the improvement between communicator herein.
The inventor of appended embodiment has recognized when when the communication link deploy Automated condtrol changed or monitoring system etc., desirably the situation of handle link failure as far as possible is rapidly with the application averted failure.The inventor of appended embodiment recognizes in addition: especially for the application of low latency, and the method for current use is near being enough to the risk processing the communication link performance reduced.Therefore the inventor of appended embodiment draws a conclusion and predicts that future link performance (such as, using the quality degradation of current ink parameter) is useful, and the application especially for low latency is useful.
Therefore, specific purpose is the communication adapting to the improvement provided between communicator based on the operation participating at least one communicator communicated.
According to first aspect, the method for the operation adapting to the communication be used between communicator is proposed.Method is performed by first communication device.Method comprises and performs application, and wherein application relates to the data communication with secondary communication device.Method comprises the impact obtained the prediction of at least one communication link for described data communication, and the impact of prediction is the information of the current ink parameter based at least one communication link described.Method comprises the operation adapting to first communication device based on the impact predicted.
Advantageously, this reduces the time of process about the potential problems of at least one communication link between two communicators performing (part) application.Therefore, the time point for adapting to any operation is equipped with the impact of prediction and moved on to before impact application from after impact application.Thus this allows the execution with the key application that low latency requires on insecure communication link.
According to second aspect, the first communication device of the operation adapting to the communication be used between communicator is proposed.First communication device comprises processing unit, is arranged to perform application, and wherein application relates to the data communication with secondary communication device.First communication device comprises communication interface, is arranged to obtain the impact on the prediction of at least one communication link for described data communication, and the impact of prediction is the information of the current ink parameter based at least one communication link described.Processing unit is also arranged as the operation adapting to first communication device based on the impact predicted.
According to the third aspect, a kind of vehicle is proposed.Vehicle comprises the first communication device according to second aspect.
According to fourth aspect, a kind of computer program adapting to the operation of the communication be used between communicator is proposed, computer program comprises computer program code, and this code, when running on first communication device, makes first communication device execution according to the method for first aspect.
According to the 5th aspect, propose a kind of computer program, comprise according to the computer program of fourth aspect and the computer readable device it storing computer program.
It should be noted that first, second, third, fourth and the 5th any feature of aspect can suitably be applied to any other side.Similarly, any advantage of first aspect can be applied to equally respectively second, third, the 4th and/or the 5th aspect, and vice versa.Other object of appended embodiment, Characteristics and advantages become obvious by from open in detail, accompanying independent claim hereafter and accompanying drawing.
Generally speaking, all terms used in the claims are explained according to their the usual implication in technical field, unless otherwise clearly defined herein.All quoting open at least one example being interpreted as element, device, parts, mode, step etc. "// described element, device, parts, mode, step etc. ", clearly state unless otherwise.The step of any method disclosed herein need not be performed by disclosed precise order, unless clearly stated.
Accompanying drawing explanation
With reference now to accompanying drawing, in an illustrative manner creative concept is described, wherein:
Fig. 1 is the schematic diagram illustrating the communication system wherein can applying embodiment in this paper;
Fig. 2 is the schematic diagram of the functional module that communicator is shown;
Fig. 3 illustrates an example of the computer program comprising computer readable device;
Fig. 4 schematically illustrates an example of the vehicle according to embodiment;
Fig. 5 is the schematic diagram illustrating the cellular communication system wherein can applying embodiment in this paper; And
Fig. 6 and Fig. 7 is the flow chart of the method according to embodiment in this paper.
Embodiment
Present general more completely describe creative concept, some embodiment of creative concept shown in figure with reference to accompanying drawing hereinafter.But this creative concept to may be implemented in many different forms and should not be construed as the embodiment being limited to and setting forth herein; On the contrary, these embodiments are provided to make the disclosure to be thorough and complete in an illustrative manner, and by the scope to the creative concept of the complete reception and registration of those skilled in the art.Describe similar numeral throughout this and refer to similar components.
Fig. 1 is the schematic diagram illustrating the communication system 1 wherein can applying embodiment in this paper.Communication system 1 comprises the first communication device being embodied as first user equipment 3a and the secondary communication device being embodied as the second subscriber equipment 3b.First communication device and secondary communication device are arranged to by communication link 6a, 6b, 6c of setting up between UE3a-b and network node 2a-c and are embodied as network node 2a, 2b, the other communication of 2c.In addition, network node 2a-c is arranged to communicate with other network node 2a-c via communication link (one of them is identified as reference number 4).Network node 2a-c is also operationally connected to core network 5 via communication link (one of them is identified as reference number 7).Core network 5 can provide service and data to the communicator being operationally connected to it.Communication system 1 also can comprise server 8(such as, application server or web page server), it is operationally connected to core network 5.Communication link 6a-6c, 4,7 can be its combination wired, wireless or any.According to an embodiment, communication link 6a-b is wireless radio links and communication link 4 meets X2 interface and communication link 7 meets S1 interface as used in LTE.
As long as the principle described hereinafter is applicable, communication system 1 can meet W-CDMA(Wide band Code Division Multiple Access usually), LTE(Long Term Evolution), EDGE(enhanced data-rates GSM evolution, Enhanced General Packet Radio Service (General Packet Radio Service)), CDMA2000(CDMA 2000), WiFi, microwave radio links, wire communication (such as, Ethernet) etc. any one or combination.
According to any communication between communication system 1, UE3a and UE3b can via at least one network node 2a-c route.But UE3a and UE3b can arrange for such as utilizing short range communication interface (such as, Bluetooth short range radio interface or directly WiFi) to carry out direct communication.Embodiment disclosed herein is not limited in this respect.
Fig. 5 diagram wherein can apply a part for the cellular communication system 21 of embodiment in this paper.Cellular communication system 21 be included in community 20a, 20b ..., 20bb provides the network coverage network node 2a, 2b ..., 2j.Each community 2a-bb is served by least one in network node 2a-j.Therefore, provided services on the Internet to UE3a, the 3b be placed in specific cell by the network node 2a-j of that specific cell of service.Cellular communication system 21 is operationally connected to server 8 via core network 5 in addition.
Cellular radio access technology (RAT) is the typical technology for radio access.Typically first in so-called focus and city position, little by little dispose advanced mobile broadband system (such as, 4G(LTE)) covering.4GLTE has the throughput performance in scope 50-100Mbits/s.4GLTE also allows low latency; Connect and the stand-by period is set in the scope of 100-200ms, and check the time at the 10-15ms(that connection mode is).Therefore, for UE3a and UE3b of covering being positioned at the network node providing 4GLTERAT, this may imply the high performance stand-by period application that can use between UE3a and UE3b.
Once cover outside at 4G, then UE3a-b often can rely on older technology, and such as 3G(such as, WCDMA and/or HSPA).Such technology has a few tenths of maximum performance of Mbits/s and the stand-by period (examination time) for stand-by period of about 0.5-1 second of arranging and the 40-100ms in connection mode usually.In rural areas, it is available for typically only having 2G to serve (such as GSM, GPRS and/or EDGE).For 2G service, throughput performance in the scope of 100kbits/s and the stand-by period be approximately 2 seconds (settings) and in connection mode be 400-500ms(examination the time).Therefore, in rural areas, can only suppose that medium link performance is to perform application.In even more meagrely-populated position, may not cover, and the communication therefore between UE3a and UE3b can be impossible at all.
As schematically illustrated in Figure 5, cellular communication system 21 provides three different RAT.Such as, community 20a, 20d and 20g uses a RAT(RAT1) network insertion is provided; Community 20b, 20e and 20h use the 2nd RAT(RAT2) network insertion is provided; And community 20c, 20f and 20j use the 3rd RAT(RAT3) network insertion is provided.Not losing generality, be illustratively 4GLTE, RAT2 by supposition RAT1 is 3G, and RAT3 is 2G.
In addition, (namely cellular radio access technology is normally designed for mobility object, UE3a-b for being operationally connected to cellular communication system 21 while of moving on to another location from a position), and on radio access links layer, be therefore provided for the process of the current signal strength controlling to current service cell so that whether inspection has the reliable connection to current service network node.Therefore, provide radio link to monitor (RLM), and for monitoring the process of the neighbor cell (both in the RAT of current use and in current other possibility RAT in the covering of UE3a-b) as possible handoff candidate person.
Consider above disclosed character and the consideration of different RAT, RAN and RLM in the disclosure.
During communication between execution two communicators (such as, the communication between UE3a and UE3b), performance can be depending on communication link 6a-c, 4, the present situation of 7.Such as, in the application that the communication on the communication link (such as, wireless radio links) changed along with the time with situation is relevant, due to the risk of the discontinuous transmission during at the appointed time section, the application processing low latency may be difficult to.For application low latency to less requirement, when it is possible, can queue up and send any message that will transmit.The latter is typically referred to as and stores and forward.Apply and confirm that (such as, as ping messages) detects link failure by transmitting beacon signal and detecting.Similarly, in any case need the application specific message transmitted also can play the effect of ping messages.Other application can have the knowledge of the message number that should receive during the time period and therefore be arranged to: react when having received the message/confirmation of lower quantity within the time period.In addition, UE3a-b and network node 2a-c can be arranged to such as by considering that the signal level of the message as exchanged between UE3a-b and network node 2a-c evaluates transmission link performance.Network node 2a-c and UE3a-b also has the knowledge of the radio access technologies (RAT) of use.Generally speaking, between two communicators, two communication links can be there are; One is transmitted link and a receiver.Depend on the communicator related to, of transmitting in link and receiver can be up link and transmit in link and receiver another can be down link.Generally speaking, up link (UL) refers to the communication link for sending signals to network node 2a-c from UE3a-d, and down link (DL) refers to the communication link for sending signals to UE3a-b from network node 2a-c.
Embodiment disclosed herein is relevant with the operation adapting to the communication be used between communicator.In order to the adaptation of the operation of the communication between obtaining for communicator, first communication device, the method performed by first communication device, the such as computer program comprising code being in the form of a computer program product provided, making communicator manner of execution when running this product on first communication device.
Fig. 2 with multiple functional module schematically illustrate communicator 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2j, 3a, 3b, 8 parts.The communicator of Fig. 2 can comprise by hardware, software or its combine the functional block provided, this disclosed functional, method step that communicator can be made to perform associate with first communication device described herein etc.Use one or more any combination in suitable CPU (CPU), multiprocessor, microcontroller, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) etc. to provide processing unit 11, it can perform and be stored in computer program 16(as in figure 3) software instruction in (such as, with the form of memory 10).Therefore, processing unit 11 is arranged to perform method as disclosed herein.Memory 10 also can comprise persistent storage, and such as, it can be any single one or combination in the memory of magnetic memory, optical memory, solid-state memory or even Remote Installation.Communicator also can comprise I/O (I/O) interface 9, such as, for providing data to display, touch-screen, button, repeater, transducer (such as, for acceleration, position, pressure, temperature, voltage, electric current, light etc.), motor controller, solenoid controlled device etc. and/or receiving data from it.Communicator also comprises communication interface 12, for the communicating of other communicator (such as, server 8, network node 2a-c and wireless device 3a-b).Communication interface 12 can comprise one or more conveyer (TX) 13 and receiver (RX) 15, comprises the antenna 14 of analog-and digital-parts and suitable quantity alternatively for radio communication.Processing unit 11 is such as by sending control signals to memory 10, I/O interface 9 and communication interface 12 and receiving from memory 10, I/O interface 9 and communication interface 12 general operation that information controls communicator.Ignore other parts of communicator and regards functionality so that not fuzzy concept in this paper.
Fig. 6 and Fig. 7 is the flow chart that diagram adapts to for the embodiment of the method for the operation of the communication between communicator.The method of Fig. 6 and Fig. 7 is performed by first communication device.Method advantageously provides as computer program 17.Fig. 3 illustrates an example of the computer program 16 comprising computer readable device 18.In this computer readable device 18, at least one computer program 17 can be stored, at least one computer program 17 can make processing unit 11 and the entity be operationally coupled with it and device (such as, memory 10, I/O interface 9 and/or communication interface 12) perform method according to embodiment described herein.In the example of fig. 3, computer program 16 is illustrated as CD, such as CD(compact disk) or DVD(digital versatile disc) or Blu-ray disc.Computer program 16 also can be embodied as memory, such as random-access memory (ram), read-only memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM) or Electrically Erasable Read Only Memory (EEPROM) and more particularly as external memory storage (such as, USB(USB) memory, flash memory or hard disk) in the non-volatile memory medium of device.Therefore, although at least one computer program 17 schematically to be shown the track on the CD for describing herein, at least one computer program 17 can be stored by suitable any mode for computer program 16.
Fig. 4 schematically illustrates the vehicle 18 comprising communicator as disclosed herein.Although the vehicle 18 in Fig. 4 is schematically illustrated as vehicle (automobile) on the ground, vehicle 18 can be any vehicle comprising communicator as disclosed herein.Such as, vehicle 18 can be on the ground or ground vehicle (such as, automobile, truck, train, mine car), air transport vehicle (such as, helicopter, aircraft or satellite), ship, ship or submarine.Vehicle can be unmanned or manned and arrange the transmission for personnel, goods or animal.
Application (in step s 102) is performed as the adaptation that performed by first communication device comprises for the method for the operation of the communication between communicator.First communication device can be UE3a, 3b, network node 2a-j or server 8.Application is performed by processing unit 11.Generally speaking, the application as performed by first communication device can comprise different software, module or form the independent application as other communicator performs.The example of application will be provided below.Application relates to the data communication with secondary communication device.Secondary communication device can be another UE3a, 3b, another network node 2a-j or another server 8.
Generally speaking, as used herein term communication link refers to physical communication link instead of logical communications links.Communication in logical communications links between two communicators can relate to the communication on multiple physical communication link.Such as, the logical communications links between a UE and the 2nd UE can comprise the first physical communication link between a UE and first network node, the second physical communication link between first network node and second network node, the 3rd physical communication link between second network node and the 2nd UE.
In addition, as mentioned above, application relates to data communication.But, generally speaking, real data not necessarily must before execution any step as disclosed herein, period or transmit afterwards.As following will in addition disclosed in, it can make to adapt to the operation of application thus forbidden data transmission.Such as, needing to send the communicator of alarm can under normal operating conditions (namely, when not giving the alarm) do not need the data communication of another communicator, but need to know whether and set up communication link or (if when giving the alarm) otherwise adapts to its operation.
Embodiment in this paper on radio access links layer, has definition for some parameters of the determination of radio link performance and the fact of process based on utilization.Such as, communication interface 12 monitoring parameter, the RAT of such as signal strength measurement, current use, with the need of switching communicator to another community and/or the relevant event of RAT and radio link quality.
Such as, in order to allow the application of low latency, fast processing link-quality reduces, can entrance link risk assessment.Link risk assessment can be represented by the impact of the prediction at least one communication link 6a, the 6b for data communication.Therefore the application performed by first communication device can determine link risk assessment (such as, at least that receiver also has the link risk assessment transmitting link) and transmit this information to the dependence related application performed by other communicator (such as, secondary communication device).
At least one other communicator that application can alternatively be configured to from performing application obtains link risk assessment.In optional step S104, therefore the communication interface 12 of first communication device can be arranged to the information of the current ink parameter obtaining at least one communication link.Different modes can be had to obtain this information.Such as, in optional step S104a, the communication interface 12 of first communication device can be arranged to obtain the signal quality (such as, but not limited to signal level signal to noise ratio, block mistake and/or bit error rate) of at least one communication link used.Such as, in optional step S104b, the communication interface 12 of first communication device can be arranged to receive switching notice.Such as, in optional step S104c, the communication interface 12 of first communication device can be arranged to obtain the radio access technologies information relevant with at least one communication link used.
Application as performed by first communication device can be configured to: based on assessment (such as, as obtained in step S104, S104a, S104b and/or S104c or receiving), determine the impact of the prediction at least one communication link.Especially, in step s 106, the communication interface 12 of first communication device is arranged to obtain the impact on the prediction of at least one communication link 6a, the 6b for data communication.The impact of prediction is the information of the current ink parameter based at least one communication link 6a, 6b.
Especially, the impact of prediction may occur in away from first communication device or be positioned at least one communication link 6a, 6b of first communication device this locality.Such as, the impact of prediction may occur in the effect playing first communication device away from UE3a() communication link 6b on or occur in be positioned at the effect that UE3a(plays first communication device) on local communication link 6a.That is, according to embodiment, at least one at least one communication link is the wireless communication link 6b away from first communication device; According to embodiment, at least one at least one communication link is the wireless communication link 6a being positioned at first communication device this locality.
In addition, typically UE3a-b monitors DL(and network node 2a-j monitoring UL), but embodiment disclosed herein is also considered to monitor UL by the UE3a-b of the effect playing first and/or secondary communication device.This receives to have come about the information of UL performance from network node 2a-j by UE3a-b, or such as independently determines that UL performance has been come by the ULTX power required for monitoring data-oriented rate by UE3a-b.High UL power and low data transfer rate may imply that close to exceeding covering.Network node 2a-j such as can operationally be connected to network node 2a-j by determining that UE3a-b(is assumed to again) no longer confirm that paging or other specific messages (as transmitted by network node 2a-j) independently determine DL performance.That is, according to embodiment, current ink parameter relates to the character of radio up-line communication link and/or radio downlink communication link.
Generally speaking, the impact of prediction may occur in any combination of long-range DL, long-range UL, local DL and local UL.
Therefore this link risk assessment can be calculated by the information of measurement obtained about the current RAT used in different communication links, signal level and the signal level that arrives (identical or different RAT's) neighbor cell alternatively.Then may be combined with this information of collecting and based on combination, the possible link-quality realized can be determined.In certain embodiments, combination can based on " worst condition link " (namely, if a communication link just meets 2G, then use the application performance relevant with 2G, even by be operationally connected to the node with more high-quality (such as, 4G) link communicator perform application in also like this).Only have link risk assessment from from before assessment (if present) change time, just need to transmit it.
Prediction allows the process of the potential degeneration at the communication link also affected before the performance of application of degenerating.In step S108, therefore the processing unit 11 of first communication device is arranged to the operation adapting to first communication device based on the impact of prediction.
As following will in addition disclosed in, wherein a scene can easily applying of creative concept is relevant with Automated condtrol and monitoring and measuring application herein.In such scene, when the information owing to losing relies on the information of mistake (namely by not considering the impact predicted), under application is operable in unsafe situation.The link performance of minimizing of prediction can be fully lose link risk or such as can reduce transmission (data transfer rate) speed of communication link and/or increase the change of RAT of communication link stand-by period.
Determination in step S108 can be construed as the change of application state.That is, in optional step S108a, processing unit can be arranged to the State Transferring of the mode of operation being initiated to the application associated with the impact predicted.Therefore, by measure link performance (that is, as above disclosed parameter) and the dependence relative section of notice application about these parameter, event etc., application can be configured to and changes its mode of operation so that the link performance of the minimizing of process prediction.Therefore application can enter the state of the risk of the prediction of the performance of the minimizing of fully process communication link.Application is had to can be configured to many examples of the action of execution.These actions can be performed by the communicator performing application again.
Such example relates to the change (will reduce transfer rate or increase stand-by period) performing RAT.In optional step S108b, therefore the communication interface 12 of first communication device can be arranged to set up and will be used at least one other communication link 6c of data communication.Therefore communication link 6c can associate with another RAT being different from the communication link 6a used in the past in addition.
Other example relates to the risk-of losing completely of communication link and possibility does not set up other communication link (set up other communication link as such, or set up the other communication link of the requirement meeting the application performed).Operation adjustment in step S108 can relate to renewal and control/monitoring configuration, enter safe condition (such as, interrupt any motion of first communication device), enter autonomous control (such as, first communication device only relies on local sensor), set up alternative communication channel (such as, if likely, then set up the point to point link with secondary communication device), select the alternative course of first communication device.In optional step S108c, therefore the processing unit 11 of first communication device can be arranged to the execution reconfiguring application by this way.
An other example relates to instruction, and other upgrades their control/monitoring configuration about application or fully changes application.In optional step S108d, therefore the communication interface 12 of first communication device can be arranged to the impact notifying secondary communication device prediction.In optional step S108e, the communication interface 12 of first communication device also can be arranged to indicate secondary communication device to perform its oneself the reconfiguring of execution (that is, as performed by secondary communication device) of application based on the impact of prediction.
The example of the other embodiment of creative concept disclosed herein is then provided with reference to figure 5.
Assuming that perform application (as in step s 102) in each UE3a, 3b.In order to illustrative object, suppose that the application performed in UE3a operationally contacts with the application performed in UE3b (potentially via the application just performed in server 8) in addition.The application that UE3a with UE3b performs also likely directly route they communicate and without the need to just in server 8 perform application.With the data communication of network node 2a-c during, according to one or more criterion communication link 6a-b whether fully good (RLM), the radio link that can monitor the network node (that is, Serving cell) be connected with all communicators of association thinks that the communication between UE3a and UE3b provides necessary mode to check.
In order to illustrative object, first suppose that UE3a is current and be by 4GLTE cell serves and be therefore operationally connected to allow to set up and meet the network node (not shown in Figure 5) of 4GLTE communication link.The related application performed on server 8 and/or UE3b can be sent to about the information of this communication link or its assessment.In order to illustrative object, suppose that UE3b is current in addition and be by 3G cell serves and be therefore operationally connected to allow to set up and meet the network node (not shown in Figure 5) of 3G communication link.The related application performed on server 8 and/or UE3a can be sent to about the information of this communication link or its assessment.Therefore can consider that information about the communication link of UE3a and UE3b is for the determination of the link level performance between the application that performed by UE3a and UE3b.As schematically illustrated in Figure 5, UE3a current Shi You community 20u(supports RAT1) service and shifting to community 20o(and supporting RAT3) and shift to community 20l(in addition and also provide RAT3).As schematically illustrated in addition in Figure 5, UE3b current Shi You community 20y(provide RAT2) serve and shifting to community 20bb(and also support RAT2).
Therefore, UE3a is shifting out 4G in the 20u of community and to cover and adjacent cell 20o is detected as and only supports 2G.On RAN layer, this first threshold connected lower than 4G by signal level detects.This can produce and be reported to the event (being referred to as event I) of serving network node 2h, and then this make UE3a start to perform measurement on adjacent 2G cell (typically in another carrier frequency deploy).On a regular basis (such as, with every 40 or the inter-frequency measurement gap of 800ms6ms), (namely UE3a can monitor 2G signal strength signal intensity, UE3a and meet the signal strength signal intensity of the potential communication link between 2G network node 2e) and once 4G signal strength signal intensity (namely, UE3a and service meet the signal strength signal intensity of the communication link between 4G network node 2h) lower than Second Threshold, just trigger switching (HO) and the HO(that network node 2h is initiated to the network node 2e of 2G cell 20o is referred to as event II).HO determines also to require that 2G signal strength signal intensity is higher than the 3rd threshold value.From the angle of application, the application performed by UE3a can be configured to the beginning using and measure (that is, event I) between RAT and forms the link level assessment that will be sent to other communicator (such as, UE3b and/or server 8) performing application as designator.The application performed by UE3a also can be configured to and carrys out determination operation adaptation (as in any step S108, S108a, S108b, S108c, S108d, S108e) based on link risk assessment.The application performed by UE3a also can be configured at follow-up time point to other communicator (such as, UE3b and/or server 8) report HO event (that is, event II) performing application.This other operation that can trigger application adapts to.Because these assessments can be passed to the application performed by UE3b, it also may change the mode of operation of the application performed by UE3b.
Secondly in order to illustrative object, supposition is for the UE3b performing application, as in step s 102, do not provide high quality communication link neighbor cell and in addition MPS process border close to UE3b.Exceed to cover and may be defined as the minimum-signal level with the reliable communication of network node.Generally speaking, this level is specific to RAT and carrier frequency (frequency band), and can measure by different modes.Such as, for GSM(at 900MHz place), it may correspond in received signal strength indicator symbol (RSSI) (that is, the total signal strength) lower than about-109dBm.For WCDMA/HSPA(frequency band 1,2GHz), it may correspond in lower than the received signal code power (RSCP) in the Common Pilot Channel (CPICH) of-119dBm.For LTE, it may correspond in Reference Signal Received Power (RSRP) (that is, public reference signal power) (frequency band 1) lower than-121dBm.Because UE3b knows such information in advance, exceed covering (or asynchronous) level and can be stored in the table of the memory 10 of UE3b and by applying access applying the term of execution.Once UE3b measures low-signal levels (such as, several dB higher than exceeding covering level), then UE3b can report that low-signal levels to other communicator (such as, UE3a and/or server 8) performing application.At UE3b(in future soon) by when exceeding covering, the application performed by UE3a, UE3b or server 8 can determine the possible new mode of operation of application (such as, allow failed security process), and therefore enter the application wherein performed by UE3a and be connected no longer possible state with the operation between the application performed by UE3b.
The example of the scene then providing wherein embodiment disclosed herein easily to apply.But as understood by a person skilled in the art, creative concept disclosed herein is not limited to these scenes only provided for diagram object.
First scene is relevant with the communicator of the part being sensor device.Generally speaking, transducer is arranged through measure physical quantities and measurement is converted to signal to collect data.Then signal can be supplied to viewer, data store or other device is used for further process.Sensor device can collect the data relevant with position, speed, temperature, pressure, still image or video image etc.Assuming that application is configured to operate at least the first mode of operation and the second mode of operation.First mode of operation associates with the first data transmission rate of communicator and the second mode of operation associates with the second data transmission rate of communicator.Do not lose generality, assuming that first data transmission rate is higher than the second data transmission rate.Second data transmission rate may correspond to the loss completely in link.In the first mode of operation, the application (as in step s 102) performed by the communicator of sensor device can be configured to collects and directly transmission represents the data of its position when pre-test, speed, temperature, pressure and/or current still image of catching or video image.In the second mode of operation, the application performed by the communicator of sensor device can be configured to only to calculate and represents source position in the given duration and destination locations, its maximum and/or minimum speed of measurement, data of temperature and pressure.The communication means part of transducer is arranged to: during it performs application, obtains the impact (as in step s 106) of the prediction at least one communication link for transducer and the data communication in addition between communicator.Application can be configured to: from the second mode of operation to (as in step S108a) during the State Transferring of the first mode of operation, the data that transmission is collected.Application can only access limited memory and its data-gathering process therefore can be configured to become from the measurement sample storing actual collection the statistics (when performing in the second mode of operation) of the measurement sample only storing collection the memory of sensor device.Otherwise, if application has been configured for time-out failure on the contrary, then, before being finished memory, the measurement that can not store all collections has been applied.This can be the 3rd mode of operation of the centre relevant with the second mode of operation with the first mode of operation alternatively.Intermediate state of operation can associate with the data transmission rate lower than first data transmission rate but higher than the data transmission rate of losing completely corresponding to link.Application can be configured to: in intermediate state of operation, the statistics of the measurement sample that transmission is collected.As understood by a person skilled in the art, other intermediate state of operation and data transmission rate can be had.
Second scene is relevant with the communicator of the part being (unpiloted or) manned vehicle.Consider (unpiloted or) the manned aircraft ([U/M] AV) of the supervision being used for region.For the communication with other communicator, UAV can be established to the communication link of at least one network node.Application is configured to extract relevant information from monitor message.Application is performed (as in step s 102) by UAV and remote server; Information extraction can be performed by remote server.In addition, the information of extraction can be passed at least one other vehicle (be arranged in the region of investigation and comprise other communicator and therefore it also can perform application).Therefore, this scene represents the embodiment wherein having the communication link between UAV and network node, the communication link between network node and server, server and the communication link in addition between network node and the communication link in addition between network node and other vehicle.Therefore vehicle depends on UAV and has reliable communication links to server for optimum performance in addition.Configurable by other vehicle (by obtaining impact on the prediction of these communication links any, as in step s 106) application that performs make when other vehicle obtain UAV, communication link between its serving network node and server remote link risk assessment time, apply the mode of operation (as in step S108a) that enters corresponding to limited monitored state even if-in addition vehicle, that communication link between its serving network node and server meets necessary requirement is also like this.In limited monitored state, application can be configured to the other vehicle more protection of instruction or seeks asylum on one's own initiative.As understood by a person skilled in the art, can have multiple other vehicle, each vehicle can be unpiloted moving vehicle.In addition, can provide communicator in manned vehicle, when performing application, communicator notifies that driver is about limited monitored state.In addition, if from the communication link of UAV performance degradation but fully do not lose, the application then performed by the communicator in UAV is convertible into mode of operation (as in step S108a), wherein replace transmission information (such as, still image or video image), the information only whether emptied about region is under surveillance sent to remote server.Similarly, application (as in step s 102) as performed by the communicator in other vehicle can be configured to assesses based on remote link the decision (as in step S104, S106 and S108) making the adaptation (such as, State Transferring) operated about it.
3rd scene is about the communicator with remote control application.In such scene, two communicators performing remote control application (as in step s 102) can (such as, for energy considerations) communicate in the first mode of operation of application on short range radio link.When having out of control risk when the link evaluation (as obtained by performing step S106) due to short range radio link, two communicators may need to convert the communication in (as in step S108a) cellular communication system to, correspond to the second mode of operation of the application performed.
4th scene is relevant with the communicator of the part being surveillance.Generally speaking, surveillance can comprise multiple communicators of (overlappingly) monitored area.Such as, when communicator attacked mala fide by radio interference transmitter, can by the central authorities' supervision part applied to collect long haul radio link evaluation (as in step S104 and S106), such as, as performed in the server.Supervise the term of execution (as in step s 102), can detect perform application any communicator link evaluation in loss (as in step S104 and S106).Then, operation is convertible into the mode of operation (as in step S108a) of the application being in alarm status and in addition additional communicator can be deployed to survey area.Therefore, monitor that application (such as, as performed in the server) does not therefore need wait from the time-out of communicator and can directly perform the action associated with alarm status on the contrary.
Below with reference to some embodiments, creative concept is mainly described.But as those skilled in the art easily recognize, being different from above other embodiment disclosed equally may in the scope of creative concept, as claims definition.Such as, as used herein term " application " also comprises application module, application library, application framework, Application Middleware, application running time and application layer virtual machine (VM) (such as, JavaVM) etc.In addition, the message transmitted between a communicator and another communicator and Internet Protocol (IP) message, transfer control protocol/the Internet protocol (TCP/IP) message or User Datagram Protoco (UDP) (UDP) message can be used to transmit the message transmitted between communicator and server.
Claims (15)
1. a method, adapt to be used for communicator (2a ..., 2j, 3a, 3b, 8) between the operation of communication, described method is performed by first communication device (3a), comprises step:
Perform (S102) application, wherein said application relate to secondary communication device (3b, 2a ..., 2j, 8) data communication;
Obtain (S106) to the impact of the prediction of at least one communication link (6a, 6b) for described data communication, the impact of described prediction is the information of the current ink parameter based at least one communication link described; And
Impact based on described prediction adapts to the operation of (S108) described first communication device.
2. method according to claim 1, wherein said adaptation also comprises:
Initiate (S108a) State Transferring to the mode of operation of the described application associated with the impact of described prediction.
3. method according to claim 1, also comprises:
Obtain the described information of the described current ink parameter of (S104) at least one communication link described.
4. method according to claim 3, wherein said obtaining information comprises:
Obtain the signal quality of at least one communication link of (S104a) described use;
Receive (S104b) switching notice; And/or
Obtain the radio access technologies information that (S104c) is relevant with at least one communication link of described use.
5. the method according to any one in the claims, at least one at least one communication link wherein said is the wireless communication link (6b) away from described first communication device.
6. the method according to any one in the claims, at least one at least one communication link wherein said is the wireless communication link (6a) being positioned at described first communication device this locality.
7. the method according to any one in the claims, wherein said current ink parameter relates to the character of radio up-line communication link and/or radio downlink communication link.
8. the method according to any one in the claims, wherein said adaptation also comprises:
Set up (S108b) and will at least one other communication link (6c) of described data communication be used for;
Reconfigure the described execution of (S108c) described application;
The impact predicted described in notice (S108d) described secondary communication device; And/or
Instruction (S108e) described secondary communication device performs reconfiguring of its oneself the execution of described application based on the impact of described prediction.
9. a first communication device (3a), adapt to be used for communicator (3a, 3b, 2a ..., 2j, 8) between the operation of communication, comprising:
Processing unit (11), is arranged to perform application, wherein said application relate to secondary communication device (3b, 2a ..., 2j, 8) data communication;
Communication interface (12), be arranged to obtain the impact on the prediction of at least one communication link (6a, 6b) for described data communication, the impact of described prediction is the information of the current ink parameter based at least one communication link described; And
Described processing unit is arranged to the operation adapting to described first communication device based on the impact of described prediction in addition.
10. first communication device according to claim 9, wherein in order to adapt to described operation, described processing unit is arranged in addition:
Be initiated to the State Transferring of the mode of operation of the described application associated with the impact of described prediction.
11. first communication devices according to claim 9 or 10, wherein said communication interface is also arranged as:
Obtain the described information of the described current ink parameter of at least one communication link described.
12. first communication devices according to claim 11, wherein in order to obtain described information, described communication interface is arranged in addition:
Obtain the signal quality of at least one communication link of described use;
Receive switching notice; And/or
Obtain the radio access technologies information relevant with at least one communication link of described use.
13. 1 kinds of vehicles (18), comprise the first communication device (3a) according to any one in claim 9-12.
14. 1 kinds of computer programs (16), adapt to be used for communicator (2a ..., 2j, 3a, 3b, 8) between the operation of communication, described computer program comprises computer program code, when running on first communication device (3a), makes described first communication device:
Perform (S102) application, wherein said application relate to secondary communication device (3b, 2a ..., 2j, 8) data communication;
Obtain (S106) to the impact of the prediction of at least one communication link (6a, 6b) for described data communication, the impact of described prediction is the information of the current ink parameter based at least one communication link described; And
Impact based on described prediction adapts to the operation of (S108) described first communication device.
15. 1 kinds of computer programs (16), comprise computer program according to claim 14 (17) and it store the computer readable device (18) of described computer program.
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| US10716059B2 (en) * | 2015-07-16 | 2020-07-14 | Apple Inc. | Intelligent PLMN selection for link budget limited wireless devices |
| US10122634B1 (en) * | 2016-01-22 | 2018-11-06 | Sprint Spectrum L.P. | Proactive response to predicted bearer loss |
| JP6849705B2 (en) * | 2016-06-24 | 2021-03-24 | スイス リインシュランス カンパニー リミテッド | Autonomous or partially autonomous vehicles, including automated risk control systems, and corresponding methods |
| WO2018103855A1 (en) * | 2016-12-08 | 2018-06-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Handling of low latency wireless devices during network performance degradation |
| CN109362104B (en) * | 2018-12-12 | 2021-09-28 | 西北工业大学 | Wireless communication rate self-adaptive control method and device |
| CN113498020A (en) * | 2021-07-07 | 2021-10-12 | 沈彦辛 | Unmanned aerial vehicle cluster belief propagation cooperative positioning method |
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| US6072990A (en) * | 1997-05-08 | 2000-06-06 | Lucent Technologies, Inc. | Transmitter-receiver pair for wireless network power-code operating point is determined based on error rate |
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